Incomplete resize support.

resize.c

@@ -0,0 +1,102 @@
+/* $Id: resize.c,v 1.1 2007-10-04 19:03:51 nicm Exp $ */
+
+/*
+ * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+
+#include <string.h>
+
+#include "tmux.h"
+
+/*
+ * Recalculate window and session sizes.
+ *
+ * Every session has the size of the smallest client it is attached to and
+ * every window the size of the smallest session it is attached to.
+ *
+ * So, when a client is resized or a session attached to or detached from a
+ * client, the window sizes must be recalculated. For each session, find the
+ * smallest client it is attached to, and resize it to that size. Then for
+ * every window, find the smallest session it is attached to, resize it to that
+ * size and clear and redraw every client with it as the current window.
+ * 
+ * This is quite inefficient - better/additional data structures are needed
+ * to make it better.
+ */
+
+void
+recalculate_sizes(void)
+{
+	struct session	*s;
+	struct client	*c;
+	struct window	*w;
+	u_int		 i, j, ssx, ssy;
+	
+	for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
+		s = ARRAY_ITEM(&sessions, i);
+		if (s == NULL)
+			continue;
+
+		ssx = ssy = UINT_MAX;
+		for (j = 0; j < ARRAY_LENGTH(&clients); j++) {
+			c = ARRAY_ITEM(&clients, j);
+			if (c == NULL || c->session != s)
+				continue;
+			if (c->sx < ssx)
+				ssx = c->sx;
+			if (c->sy < ssy)
+				ssy = c->sy;
+		}
+		if (ssy < status_lines)
+			ssy = status_lines + 1;
+		ssy -= status_lines;
+		if (s->sx == ssx && s->sy == ssy)
+			continue;
+
+		log_debug(
+		    "session size %u,%u (was %u,%u)", ssx, ssy, s->sx, s->sy);
+
+		s->sx = ssx;
+		s->sy = ssy;
+	}
+
+	for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
+		w = ARRAY_ITEM(&windows, i);
+		if (w == NULL)
+			continue;
+
+		ssx = ssy = UINT_MAX;
+		for (j = 0; j < ARRAY_LENGTH(&sessions); j++) {
+			s = ARRAY_ITEM(&sessions, j);
+			if (s == NULL || !session_has(s, w))
+				continue;
+			if (s->sx < ssx)
+				ssx = s->sx;
+			if (s->sy < ssy)
+				ssy = s->sy;
+		}
+		if (w->screen.sx == ssx && w->screen.sy == ssy)
+			continue;
+
+		log_debug("window size %u,%u (was %u,%u)", 
+		    ssx, ssy, w->screen.sx, w->screen.sy);
+
+		server_clear_window(w);
+		window_resize(w, ssx, ssy);
+		server_redraw_window(w);
+	}
+}